bmar
May 24th, 2008, 03:47 AM
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I am new to this forum and I do not know much about the reprogramming of a PCU. I have the engine from a 2002 Avalanche I am installing into a 1957 chevy pickup. I sent the PCU off three different times to have it reprogrammed and have not met with much success. The engine has drive by wire that has never worked. Two of the three times I have received the PCU back the signal for the fuel pump pulses continously and I can not get the engine to start, this is were I am at now. The second tune would load the fuel pump for the 2 seconds and the engine ran fine, but no drive by wire. I sent the PCU back and once again have the pulsing signal. The tuner told be I had a wiring problem. but I do not understand why the engine runs under one tuning but not under another. I have tried two different tuners and sent the PCU off three different times and still have an engine that doesn't work properly. any help?
I am new to this forum and I do not know much about the reprogramming of a PCU. I have the engine from a 2002 Avalanche I am installing into a 1957 chevy pickup. I sent the PCU off three different times to have it reprogrammed and have not met with much success. The engine has drive by wire that has never worked. Two of the three times I have received the PCU back the signal for the fuel pump pulses continously and I can not get the engine to start, this is were I am at now. The second tune would load the fuel pump for the 2 seconds and the engine ran fine, but no drive by wire. I sent the PCU back and once again have the pulsing signal. The tuner told be I had a wiring problem. but I do not understand why the engine runs under one tuning but not under another. I have tried two different tuners and sent the PCU off three different times and still have an engine that doesn't work properly. any help?